From: Correlation between the prevalence of herniation pits and the alpha angle of the hip: computed tomography evaluation in healthy Chinese adults
Parameter
Age group (years)
Total
16–20
21–30
31–40
41–50
51–60
61–70
>71
Femurs
77
187
211
229
200
92
149
1145
Herniation pits
3
12
35
32
30
15
16
143
Prevalence (%)
3.9
6.4
16.6
14.0
15.0
16.3
10.7
12.5